STMicroelectronics STM32L073RZT6U, STM32L0 series, 32-bit ARM Cortex-M0+ MCU, 32 MHz, 192 KB Flash, 20 KB RAM, 6 KB EEPROM, 51 I/O, 64-LQFP, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Series | STM32L0 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 32MHz |
| Package | Tray |
| RAM size | 20K x 8 |
| Core size | 32-Bit Single-Core |
| EEPROM size | 6K x 8 |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT |
| Connectivity | I²C, IrDA, LINbus, SPI, UART/USART, USB |
| Number of i (O) | 51 |
| Core processor | ARM® Cortex®-M0+ |
| Case | 64-LQFP |
| Data converters | A/D 16x12b; D/A 2x12b |
| Program memory size | 192KB (192K x 8) |
No exposed pad to stitch, no BGA reflow complexity — standard rework techniques handle it. The 51 GPIOs leave enough headroom for a segment LCD, a keypad matrix, and a few serial interfaces without multiplexing.
Within the STM32L0 family, the STM32L073xZ variants (same 64-pin LQFP footprint) share the same pinout and peripheral set. The key differentiator is Flash and RAM density — the STM32L073RZT6U sits at the 192 KB Flash / 20 KB RAM tier. A lower-density sibling in the same package may be pin-compatible but check the memory map and available I/O for your firmware image.
The STM32L073RZT6U is rated for a 32 MHz core clock. This is the maximum CPU frequency; the actual throughput depends on Flash wait states and the clock tree configuration.